Here is the street cred: Dr. Mighton completed a Ph.D. in mathematics at the University of Toronto and was awarded an NSERC fellowship for postdoctoral research in knot and graph theory. He is currently a Fellow of the Fields Institute for Mathematical Research and an Adjunct Professor of mathematics at the University of Toronto. Dr. Mighton also lectured in philosophy at McMaster University, where he received a Masters in philosophy.Honestly, I am impressed with the approach the program takes to include all students, at their learning speeds, using relevant materials and methods. He says his programs works for teachers, parents, and tutors - I believe him.
Link to material at "JUMP Math": check out "JUMP Math" http://www.educationreporting.com/curriculum.php#mat